Bug fix for substitutions

biscuit/apps/untis/parse.py

@@ -221,7 +221,7 @@ def get_lesson_element_by_id_and_teacher(lesson_id, teacher, hour=None, weekday=
     try:
         lesson = get_lesson_by_id(lesson_id)
     except Exception:
-        return None
+        return None, None
     el = None
     i = 0
     print(lesson.elements)

biscuit/apps/untis/sub.py

@@ -83,8 +83,7 @@ class Substitution(object):
                 self.teacher_new = None
 
         self.lesson_element, self.room_old = get_lesson_element_by_id_and_teacher(self.lesson_id, self.teacher_old,
-                                                                                  self.lesson,
-                                                                                  self.date.weekday() + 1)
+                                                                                  self.lesson, self.date.weekday() + 1)
         # print(self.lesson)
         print(self.room_old)
         # Subject